| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved.
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #ifndef GLTRANS_H
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| 8 | #define GLTRANS_H
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| 9 |
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| 10 | #include "state/cr_statetypes.h"
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| 11 |
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| 12 | #include <iprt/cdefs.h>
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| 13 |
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| 14 | #ifdef __cplusplus
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| 15 | extern "C" {
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| 16 | #endif
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| 17 |
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| 18 | #define NUM_MATRICES 4
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| 19 |
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| 20 | typedef struct {
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| 21 | CRbitvalue dirty[CR_MAX_BITARRAY];
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| 22 | CRbitvalue *currentMatrix; /* points to one of the following */
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| 23 | CRbitvalue matrixMode[CR_MAX_BITARRAY];
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| 24 | CRbitvalue modelviewMatrix[CR_MAX_BITARRAY];
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| 25 | CRbitvalue projectionMatrix[CR_MAX_BITARRAY];
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| 26 | CRbitvalue colorMatrix[CR_MAX_BITARRAY];
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| 27 | CRbitvalue textureMatrix[CR_MAX_BITARRAY];
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| 28 | CRbitvalue programMatrix[CR_MAX_BITARRAY];
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| 29 | CRbitvalue clipPlane[CR_MAX_BITARRAY];
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| 30 | CRbitvalue enable[CR_MAX_BITARRAY];
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| 31 | CRbitvalue base[CR_MAX_BITARRAY];
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| 32 | } CRTransformBits;
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| 33 |
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| 34 | typedef struct {
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| 35 | CRmatrix *top; /* points into stack */
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| 36 | CRmatrix *stack; /* array [maxDepth] of CRmatrix */
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| 37 | GLuint depth; /* 0 <= depth < maxDepth */
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| 38 | GLuint maxDepth; /* size of stack[] array */
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| 39 | } CRMatrixStack;
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| 40 |
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| 41 | typedef struct {
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| 42 | GLvectord *clipPlane;
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| 43 | GLboolean *clip;
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| 44 |
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| 45 | GLenum matrixMode;
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| 46 |
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| 47 | /* matrix stacks */
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| 48 | CRMatrixStack modelViewStack;
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| 49 | CRMatrixStack projectionStack;
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| 50 | CRMatrixStack colorStack;
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| 51 | CRMatrixStack textureStack[CR_MAX_TEXTURE_UNITS];
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| 52 | CRMatrixStack programStack[CR_MAX_PROGRAM_MATRICES];
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| 53 | CRMatrixStack *currentStack;
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| 54 |
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| 55 | GLboolean modelViewProjectionValid;
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| 56 | CRmatrix modelViewProjection; /* product of modelview and projection */
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| 57 |
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| 58 | #ifdef CR_OPENGL_VERSION_1_2
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| 59 | GLboolean rescaleNormals;
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| 60 | #endif
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| 61 | #ifdef CR_IBM_rasterpos_clip
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| 62 | GLboolean rasterPositionUnclipped;
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| 63 | #endif
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| 64 | GLboolean normalize;
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| 65 | } CRTransformState;
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| 66 |
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| 67 |
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| 68 | DECLEXPORT(void) crStateTransformInit(CRContext *ctx);
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| 69 | DECLEXPORT(void) crStateTransformDestroy(CRContext *ctx);
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| 70 |
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| 71 | DECLEXPORT(void) crStateInitMatrixStack(CRMatrixStack *stack, int maxDepth);
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| 72 |
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| 73 | DECLEXPORT(void) crStateLoadMatrix(const CRmatrix *m);
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| 74 |
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| 75 | DECLEXPORT(void) crStateTransformUpdateTransform(CRTransformState *t);
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| 76 | DECLEXPORT(void) crStateTransformXformPoint(CRTransformState *t, GLvectorf *p);
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| 77 |
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| 78 | DECLEXPORT(void) crStateTransformXformPointMatrixf(const CRmatrix *m, GLvectorf *p);
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| 79 | DECLEXPORT(void) crStateTransformXformPointMatrixd(const CRmatrix *m, GLvectord *p);
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| 80 |
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| 81 | DECLEXPORT(void) crStateTransformDiff(CRTransformBits *t, CRbitvalue *bitID,
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| 82 | CRContext *fromCtx, CRContext *toCtx);
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| 83 |
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| 84 | DECLEXPORT(void) crStateTransformSwitch(CRTransformBits *bb, CRbitvalue *bitID,
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| 85 | CRContext *fromCtx, CRContext *toCtx);
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| 86 |
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| 87 | #ifdef __cplusplus
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| 88 | }
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| 89 | #endif
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| 90 |
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| 91 | #endif /* CR_STATE_TRANSFORM_H */
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